Which of the following best exemplifies how the system of checks and balances is carried out:

A. The legislature passes a law that prohibits the president from commuting a judiciary-imposed sentence, as a check of the president;
B. The President pardons a convict as a way to set aside or modify a judgment of the judiciary;
C. The judiciary overturns a pardon granted by the President as a check on executions;
D. The President pardons an accused after arraignment in the interest of justice.
(2012 BAR)